func (z *zkCluster) GetQueryNodes() ([]clustering.QueryNode, errors.Error) {
impl, ok := getConfigStoreImplementation(z)
if !ok {
return nil, errors.NewAdminConnectionError(nil, z.ConfigurationStoreId())
}
qryNodes := []clustering.QueryNode{}
nodes, _, err := impl.conn.Children("/" + z.Name())
if err != nil {
return nil, errors.NewAdminGetClusterError(err, z.Name())
}
for _, name := range nodes {
nodePath := "/" + z.Name() + "/" + name
data, _, err := impl.conn.Get(nodePath)
if err != nil {
return nil, errors.NewAdminGetNodeError(err, nodePath)
}
queryNode := &zkQueryNodeConfig{}
err = json.Unmarshal(data, queryNode)
if err != nil {
return nil, errors.NewAdminDecodingError(err)
}
qryNodes = append(qryNodes, queryNode)
}
return qryNodes, nil
}
func getNodeFromRequest(req *http.Request) (clustering.QueryNode, errors.Error) {
var node clustering.QueryNode
decoder := json.NewDecoder(req.Body)
err := decoder.Decode(&node)
if err != nil {
return nil, errors.NewAdminDecodingError(err)
}
return node, nil
}
func getClusterFromRequest(req *http.Request) (clustering.Cluster, errors.Error) {
var cluster clustering.Cluster
decoder := json.NewDecoder(req.Body)
err := decoder.Decode(&cluster)
if err != nil {
return nil, errors.NewAdminDecodingError(err)
}
return cluster, nil
}
func (z *zkConfigStore) ClusterByName(name string) (clustering.Cluster, errors.Error) {
data, _, err := z.conn.Get("/" + name)
if err != nil {
return nil, errors.NewAdminGetClusterError(err, name)
}
var clusterConfig zkCluster
err = json.Unmarshal(data, &clusterConfig)
if err != nil {
return nil, errors.NewAdminDecodingError(err)
}
clusterConfig.configStore = z
return &clusterConfig, nil
}
func (z *zkCluster) QueryNodeByName(name string) (clustering.QueryNode, errors.Error) {
impl, ok := getConfigStoreImplementation(z)
if !ok {
return nil, errors.NewAdminConnectionError(nil, z.ConfigurationStoreId())
}
nodePath := "/" + z.ClusterName + "/" + name
data, _, err := impl.conn.Get(nodePath)
if err != nil {
return nil, errors.NewAdminGetNodeError(err, nodePath)
}
var queryNode zkQueryNodeConfig
err = json.Unmarshal(data, &queryNode)
if err != nil {
return nil, errors.NewAdminDecodingError(err)
}
return &queryNode, nil
}
func wrapAPI(s *server.Server, w http.ResponseWriter, req *http.Request, f apiFunc) {
obj, err := f(s, w, req)
if err != nil {
writeError(w, err)
return
}
if obj == nil {
w.WriteHeader(http.StatusNotFound)
return
}
buf, json_err := json.Marshal(obj)
if json_err != nil {
writeError(w, errors.NewAdminDecodingError(json_err))
return
}
w.WriteHeader(http.StatusOK)
w.Header().Set("Content-Type", "application/json")
w.Write(buf)
}
func (z *zkConfigStore) GetClusters() ([]clustering.Cluster, errors.Error) {
clusters := []clustering.Cluster{}
nodes, _, err := z.conn.Children("/")
if err != nil {
return nil, errors.NewAdminGetClusterError(err, "/")
}
for _, name := range nodes {
if name == _RESERVED_NAME {
continue
}
data, _, err := z.conn.Get("/" + name)
if err != nil {
return nil, errors.NewAdminGetClusterError(err, name)
}
cluster := &zkCluster{}
err = json.Unmarshal(data, cluster)
if err != nil {
return nil, errors.NewAdminDecodingError(err)
}
clusters = append(clusters, cluster)
}
return clusters, nil
}